function ValidateForm()
{
if (document.contactform.name.value=="") { alert("Please enter your name"); document.contactform.name.focus(); return (false); }
if (document.contactform.telephone.value=="") { alert("Please enter your telephone number"); document.contactform.telephone.focus(); return (false); }
if (document.contactform.email.value=="") { alert("Please enter your email address"); document.contactform.email.focus(); return (false); }
if (document.contactform.enquiry.value=="") { alert("Please enter a brief description of your enquiry"); document.contactform.enquiry.focus(); return (false); }

return (true);

}